| Type | evaluation kit |
DEV3185 – Development Board for HT66F3185 MCU
The DEV3185 is part of the Holtek Easy DEV board series, designed to simplify prototyping and application development with the HT66F3185 microcontroller. All MCU pins are broken out to standard 0.1" pitch headers for easy connection to breadboards and peripheral modules.
The board is equipped with the HT66V3185 MCU, which includes full compatibility with the HT66F3185 along with OCDS (On-Chip Debug Support) for hardware debugging.
Key features:
Supports programming (ICP) and debugging (OCDS) via the e-Link adapter
Pre-programmed demo code showcases a breathing LED effect using an I/O pin (demonstrated in a video using the DEV24SSOP175 board)
Compact design: 55 × 23 × 11 mm, weight: 5.4 g
Package includes:
DEV3185 development board × 1
5-pin 90° header × 1
14-pin 180° headers × 2
The DEV3185 is an excellent tool for developers and makers looking for a practical, ready-to-use solution for evaluating and developing Holtek-based projects.


